# Large-flowered Evening-primrose (*Oenothera glazioviana*) The Large-flowered Evening-primrose is a beautiful flower that blooms in the evening. Its bright yellow petals open up at night and attract nighttime pollinators like moths. - **Category:** [Plants](https://www.snappit.app/explore/categories/plant) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Habitat:** Urban areas, fields ![Large-flowered Evening-primrose](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Oenothera_glazioviana_03_ies.jpg&width=800) Photo: Frank Vincentz, CC BY-SA 3.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Oenothera_glazioviana_03_ies.jpg) ## Appearance The Large-flowered Evening-primrose has striking bright yellow, cup-shaped flowers, often 7-10 cm wide, which open dramatically at dusk. Its sturdy stems often feature a distinctive reddish tinge, making it stand out in fields. ## Taxonomy - **Kingdom:** Plantae - **Phylum:** Tracheophyta - **Class:** Magnoliopsida - **Order:** Myrtales - **Family:** Onagraceae - **Genus:** Oenothera ## Interesting facts - Evening-primrose oil, extracted from its seeds, is famous for skin care. - Its flowers smell sweet, especially at night, guiding moths to their nectar! - The leaves and roots are actually edible, even tasting a bit peppery! - You can sometimes watch its petals visibly unfurl in just minutes at sunset! ## Special abilities - **Night Bloom Power:** Large-flowered Evening-primrose can open its fragrant flowers rapidly at dusk to attract nocturnal moths. - **Seed Slingers:** Large-flowered Evening-primrose has seed capsules that release many tiny seeds to help it spread widely. - **Deep Drinker:** It can grow a long taproot, reaching deep water in dry, disturbed soils, helping it survive drought. ## Measurements & details - **Height:** 100-150 cm - **Spread:** 30-60 cm - **Flower Size:** 7-10 cm - **Bloom Season:** Summer to early autumn - **Edible:** Yes - **Toxicity:** None - **Lifecycle:** Biennial - **Pollination Method:** Insect ## Ecological connections - **Pollinates:** Tobacco Hornworm Moth (*Manduca sexta*) — Its long proboscis is perfect for reaching deep nectar. - **Pollinates:** Honey Bee (*Apis mellifera*) — Visits flowers in early morning before they close for pollen. - **Eaten by:** [Garden Snail](https://www.snappit.app/explore/garden-snail) (*Helix aspersa*) — Snails sometimes munch on the tender leaves and flowers. ## Traits - [Flowering](https://www.snappit.app/explore/traits/flowering): Flowering plants are any plants that produce flowers as part of their reproductive cycle. - [Biennial](https://www.snappit.app/explore/traits/biennial): Biennial plants complete their life cycle over two growing seasons, typically forming foliage in the first year and flowering/seeding in the second. - [Fragrant Flower](https://www.snappit.app/explore/traits/fragrant-flower): Fragrant flowers emit a pleasant aroma, often to attract pollinators or for defense. - [Night Blooming](https://www.snappit.app/explore/traits/night-blooming): Night blooming plants open their flowers after sunset, often to attract nocturnal pollinators with their scent and appearance. - [Pollinator Magnet](https://www.snappit.app/explore/traits/pollinator-magnet): Describes plants that are particularly attractive and beneficial to a wide range of pollinating organisms. - [Rapid Growing](https://www.snappit.app/explore/traits/rapid-growing): Rapid growing plants exhibit accelerated growth rates, quickly increasing in size and biomass within a short period. - [Urban Friendly](https://www.snappit.app/explore/traits/urban-friendly): This habitat trait indicates species that can coexist with humans in urban and suburban environments, utilizing man-made structures and green spaces. ## Collections - [Plants](https://www.snappit.app/explore/collections/plants) ## Safety **Danger:** 1/5 · Very low Always look but don't touch flowers without asking an adult. ## Frequently Asked Questions ### How to identify Large-flowered Evening-primrose? Start with the whole plant, then compare leaf arrangement, leaf edges, stems and any flowers or fruit. Opposite leaves grow in pairs; alternate leaves come one at a time along the stem. These details tell you far more together than a single green leaf does. Plant Identifier: upload a photo and compare the visible details. ### How tall is Large-flowered Evening-primrose? 100-150 cm ### How wide does Large-flowered Evening-primrose spread? 30-60 cm ### How big are the flowers on Large-flowered Evening-primrose? 7-10 cm ### When does Large-flowered Evening-primrose bloom? Summer to early autumn ### Is Large-flowered Evening-primrose edible? Yes ### Is Large-flowered Evening-primrose toxic? None ### What is Large-flowered Evening-primrose's lifecycle? Biennial ## Where to spot - [Lockhart Beach Provincial Park](https://www.snappit.app/guides/places/lockhart-beach-provincial-park) — British Columbia, CA · State Park ## More Plants - [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*) - [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*) - [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*) - [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*) --- Source: [Large-flowered Evening-primrose Facts — Snappit](https://www.snappit.app/explore/large-flowered-evening-primrose)